An arrest has been made in one of three fatal shootings that occurred within hours of each other this weekend in Indianapolis, police announced Monday.

Darrail Mix, 36, turned himself into police on Sunday, a day after the shooting, and was arrested on a preliminary murder charge, Indianapolis Metropolitan Police said in a news release.

Homicide detectives identified Mix as a suspect in the deadly shooting in the 10000 block of Penrith Drive. IMPD officers responded to a report of two men arguing just after 1 p.m. Saturday. They found a man who was apparently shot as a result of the disturbance, police said.

The 56-year-old victim, LaDarrell Mix, was taken to Eskenazi Hospital where he died, police said.

Police confirmed to IndyStar on Monday that the victim was Darrail Mix's father.

It was the first of three shootings on the east, northwest and southwest sides. They don't appear to be connected, police said.

At 6:30 p.m., Arnell Davis was fatally shot near the intersection of West 38th Street and North High School Road. At least one unidentified suspect pulled up next to an SUV, police said, and fired. Davis was pronounced dead at the scene.